Hello everyone, I just registered and I'm glad to be here. I'm working on this Macbook and since I am none too familiar with Mac (I'm a PC Guy) I joined this community to learn more. Any suggestions on other forums to join would be great too.
The Macbook I'm working on is a A1297 EMC: 2329 2.8Ghz model running OS X 10.7.5. It came in because it would periodically turn itself off, and would no longer turn on. When I pressed the power button nothing happened; no fans, no HDD spin-up, no LED's, nothing. This happened whether the Macbook is plugged in or not. I pressed the battery indicator button and it showed it to be at 7/8 charge.
First thing I did was look up the specs to accurately trouble shoot. I then removed the back and tried to power on the Macbook by the two silver jumper pins on the logic board to no avail. When this did not work, I disconnected the battery and charger, pressed and held the power button for 10 seconds, reconnected the battery and pressed the power button. Boom, the Macbook began to power on, however at one point during the grey load screen it shut itself off again. I plugged in the charger, pressed the power button once more and it turned on and has remained on. I have now unplugged the charger and continue to use it and it has not yet shut off.
What do you guys think the problem is?
EDIT: To further troubleshoot this I turned it off and attempted to turn it back on with the charger out (battery now indicated to be at 6/8) and it does not turn on. It tries to spin-up but it then cuts off before the screen ever illuminates. I plugged it in and attempted to turn it on and it came right on.